JPH11348004A - Stick material laminating method and stick material laminating apparatus - Google Patents

Abstract

(57) [Summary] A plurality of stick materials can be efficiently stacked in a flat plate shape in a state where the directions of the stick materials are aligned with each other in a direction orthogonal to the longitudinal direction. A plurality of stick materials having substantially the same length are sequentially conveyed in a horizontal direction by a plurality of carry-in conveyors in a state where their longitudinal directions are orthogonal to the conveyance direction. The stick material 31 is carried in a state where the respective longitudinal directions are orthogonal to the carrying direction and the respective stick members 31 are displaced in the longitudinal direction. Each stick material 31 is thrown into the accommodating portion formed in a bag shape by the accumulation belt 13c of the accumulation mechanism 13 while maintaining the respective directions and longitudinal shifts. Then, the accumulation belt 1
3c is developed in an inclined plane shape, so that each stick material 31 is developed in a state of maintaining the directionality and the shift in the longitudinal direction, and is stacked in a flat plate shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for manufacturing a wood-based composite material using, for example, a stick material obtained by cutting a raw wood or veneer along a fiber direction. The present invention relates to a stick material laminating method and a laminating apparatus used for stacking in a suitable state in an appropriate area and thickness.

[0002]

2. Description of the Related Art Wooden structural materials used for houses and the like are:
Like metal-based structural materials, it is an important building material and is subject to structural calculations to guarantee mechanical strength. Such a wooden structural material is generally used by cutting a log into a predetermined size. However, in order to obtain a large-volume wood-based structural material, it must be grown for a long time until the log becomes a large tree. Recently, since such a large tree has been reduced, the log is cut and cut. The supply of good quality wood-based structural materials obtained is decreasing. In order to solve such a problem, wood pieces (elements) obtained by subdividing the raw wood before growing into a large tree were reconstructed in place of the wood-based structural material used directly in a state where the raw wood was cut. Wood-based reconstructed materials are being used.

[0003] The wood-based reconstructed material is called engineering wood, and does not have any defects such as knots and has a uniform strength, unlike the wood-based material used directly after cutting a log. , Stable performance can be obtained.

[0004] In the wood-based reconstituted material, a plurality of stick materials obtained by cutting a log along the fiber direction are united with a thermosetting resin by applying pressure while being aligned along the fiber direction. There are wood-based composites. The longer the wood fiber, the higher the bending strength of such a wood-based composite material, and stable strength can be obtained by uniformly distributing the stick materials in a parallel state.

Japanese Unexamined Patent Publication (Kokai) No. 7-195313 discloses that a stick material is manufactured by splitting a wooden material in a longitudinal direction of a fiber, and further splitting the obtained split material in the longitudinal direction. After drying the stick material and applying the adhesive, aligning each in a state along the longitudinal direction, transporting by a belt conveyor in a direction orthogonal to each longitudinal direction, and dropping on predetermined transporting means Discloses a configuration in which a plurality of layers are stacked on a transport unit. The laminate on the conveying means is conveyed to the heating and pressurizing step by the conveying means, and is heated and pressurized to be a wood-based composite.

[0006]

As described above, in a configuration in which each of the stick members is conveyed by the belt conveyor in a state where the respective stickers are aligned in the longitudinal direction, and dropped from the belt conveyor onto the convey means, the belt conveyer and the convey means And a drop greater than the pulley diameter occurs. For this reason, when the head is large, the directionality of each stick material falling from the belt conveyor onto the transporting means is disturbed, and the directions of the stick materials may not be aligned. As described above, when the wood-based composite material is formed in a state in which the directions of the respective stick materials are not aligned, desired physical properties may not be obtained as the wood-based composite material. Also, if the pulley diameter of the belt conveyor is reduced in order to reduce the drop between the belt conveyor and the transporting means so that the direction of the stick material dropped from the belt conveyor is not disturbed, the traveling speed of the transport belt will increase. In such a case, meandering, deviation, and the like of the conveyor belt cannot be easily adjusted, which may hinder the traveling of the conveyor belt.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a method in which all the stick materials are arranged in the same direction, and the stick materials are evenly distributed in a direction perpendicular to the longitudinal direction. It is an object of the present invention to provide a stick material laminating method and a stick material laminating apparatus capable of efficiently laminating a stick material having a predetermined area and thickness in a dispersed state.

[0008]

According to the present invention, there is provided a stick material laminating method in which a plurality of stick materials having substantially the same length are sequentially conveyed in a horizontal direction with their respective longitudinal directions orthogonal to the conveying direction. And a step of feeding each stick material into the container while maintaining each direction while each end portion is shifted in the longitudinal direction, and stacking the stick materials in the same direction. And deploying each of the stick materials accumulated in the storage section while maintaining their respective directional and longitudinal deviations, and laminating them in a flat plate shape having a predetermined area and thickness. Features.

The stick material laminating apparatus of the present invention sequentially transports a plurality of stick materials having substantially the same length in the horizontal direction with their longitudinal directions orthogonal to the transport direction. A plurality of carry-in conveyors that carry out each stick material while maintaining their respective directions from the ends of the sticks, and each stick material that is carried out by all carry-in conveyors is sequentially carried in while maintaining their respective directions. Traverse conveyor, which is configured to be conveyed in the same direction as the conveyance direction of each carry-in conveyor, and reciprocates as a whole in a direction perpendicular to the conveyance direction, and the side of the discharge side end of the traverse conveyor. , All the stick materials carried out by the traverse conveyor are collected while maintaining the directionality and the longitudinal displacement And an accumulating mechanism that is arranged so as to obtain the respective stick materials and expands the stick materials to the side while maintaining the directional and longitudinal deviations to form a flat-plate stacked state. It is characterized by the following.

The accumulating mechanism has an accumulating belt disposed along the transport direction of the traverse conveyor, and the accumulating belt is configured such that each stick material unloaded from the traverse conveyor is sequentially input and accumulated. Section U
It is configured as a bag-shaped storage portion that hangs down in a letter shape, and is in a state of being inclined in a plane so that all the stick materials accumulated in the bag-shaped storage portion flow down.

The stacking belt in the stacking mechanism can reciprocate along the circling direction in a state in which a bag-shaped accommodation section is formed.

When the stacking belt in the stacking mechanism is formed into an inclined plane, the lower end thereof is moved in the horizontal direction.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic front view showing an embodiment of a stick material laminating apparatus according to the present invention together with a stick material manufacturing apparatus. Stick material laminating apparatus 1 of the present invention
Numeral 0 is used for laminating the stick members 31 obtained from a flat plate into a flat plate having an appropriate area and thickness with their respective longitudinal directions aligned in the same direction. Four carry-in conveyors 11 for carrying the stick materials 31 continuously supplied from the manufacturing apparatus 20 in a state where their respective longitudinal directions are orthogonal to the carrying direction, and each stick material carried by each carry-in conveyor 11 The traverse conveyor 12 includes a single traverse conveyor 12 for collecting and transporting the stick materials 31 and a stacking mechanism 13 for stacking the stick materials 31 conveyed by the traverse conveyor 12 in a storage unit and then developing the stick materials 31 into a flat plate shape.

For example, a flat plate 30 is supplied to each stick material manufacturing apparatus 20 which continuously supplies the stick material 31 to each carry-in conveyor 11 in a state where the direction of the wood fiber is orthogonal to the transport direction. . The supplied flat plate 30 is supplied to the rotary cutter 23 by the belt conveyor 21 after the surface of the thermosetting resin is applied by the coater. Rotary cutter 2
3 sequentially cuts the supplied flat plate 30 in the direction of the wood fiber orthogonal to the conveying direction, and for example, has a length of 1200
mm, width 15mm, thickness 3mm stick material 31
Are sequentially formed.

The thermosetting adhesive applied to the flat plate 30 includes formaldehyde-based adhesives such as urea resin, melamine / urea co-condensation resin, phenol resin, phenol / melamine co-condensation resin, resorcinol resin, MDI,
Isocyanate-based adhesives such as TDI, urethane-based adhesives, epoxy adhesives, acrylic resin adhesives, α-olefin maleic anhydride resin adhesives, and lignin-based adhesives are preferably used.

Each stick material 31 formed by the rotary cutter 23 in each stick material manufacturing apparatus 20 has a shooter disposed continuously below each rotary cutter 23 with its longitudinal direction perpendicular to the transport direction. The carry-in ends of the four carry-in conveyors 11 constituting the stick material laminating apparatus 10 are continuously arranged below the shooters 24.

The four carry-in conveyors 11 extend horizontally along the flow direction of the stick material 31 flowing down along each shooter 24, and are arranged in parallel with each other at a predetermined interval. ing. Each carry-in conveyor 11 has a conveyor belt 11a that circulates along the flow-down direction of the shooter 24, and a stick material 31 that flows down along each shooter 24 on the carry-in side end of the conveyor belt 11a. However, they are sequentially loaded in a state where the longitudinal direction is orthogonal to the transport direction. The stick members 31 carried on the carry-in end of the carrying belt 11a in each carrying-in conveyor 11 are horizontally carried sequentially by the carrying belts 11a in a direction away from the shooter 24.

FIG. 2 is a schematic plan view of the carry-out side end of each carry-in conveyor 11. Each carry-in conveyor 11 has an equal length, and each carry-out side end has
The transporting directions of the loading conveyors 11 are arranged on the loading side end of the traverse conveyor 12 in which the transport direction is the same. The traverse conveyor 12 has a conveyor belt 12a that circulates in the same direction as the conveyance direction of each carry-in conveyor 11, and is disposed on the carry-in side end of the carry belt 12a from the carry-out side end of each carry-in conveyor 11. The stick materials 31 to be carried out are respectively transferred while maintaining their respective directions.

The traverse conveyor 12 is supported on a pair of chain conveyors 15 that move around in a direction orthogonal to the transport direction of the traverse conveyor 12, and the entire traverse conveyor 12 is moved by each chain conveyor 15. It is configured to reciprocate in a direction perpendicular to the transport direction. Then, when the conveyor belts 12a of the traverse conveyor 12 are circulated, when the conveyor belts 12a of the traverse conveyor 12 are sequentially moved into the traverse conveyor 12 in a state in which their respective longitudinal directions are orthogonal to the conveyance direction, the traverse conveyors 12 carry the traverse conveyors. The entire conveyor 12 is reciprocated in a direction orthogonal to the transport direction. Thereby, as shown in FIG. 2, the stick members 31 each of which is carried in a state perpendicular to the carrying direction of the carrying belt 12a from the carrying-in conveyors 11 on the carrying belt 12a of the traverse conveyor 12, respectively. Are arranged in such a manner that their respective ends are sequentially shifted in the longitudinal direction. Each stick member 31 is configured to sequentially flow downward from the unloading side end of the traverse conveyor 12.

Below the end on the unloading side of the traverse conveyor 12, there is provided a stacking mechanism 13 into which stick materials 31 sequentially conveyed by the traverse conveyor 12 are put and stacked. The stacking mechanism 13 includes a take-up drum 13 a disposed below the unloading side end of the traverse conveyor 12 along a direction orthogonal to the transport direction of the traverse conveyor 12, and is parallel to the take-up drum 13 a. And a slide drum 13b slidably arranged in the horizontal and vertical directions on the transport direction side of the stick material 31 by the traverse conveyor 12 with respect to the winding drum 13a, and a belt-like shape along the transport direction of the traverse conveyor 12. There is a stacking belt 13c with each side wound around a winding drum 13a and a slide drum 13b.

The take-up drum 13a is rotatably mounted below the unloading end of the traverse conveyor 12. Each end of the slide drum 13b is rotatably supported in a vertically slidable manner along a vertical guide 13f which is vertically arranged. Each of the vertical guides 13f is supported by a pair of upper horizontal guides 13d and lower horizontal guides 13e, which are arranged at appropriate intervals in the vertical direction, so that the upper and middle portions are slidable in the horizontal direction, respectively. Therefore, the vertical guide 13f supporting each end of the slide drum 13b, respectively.
Are the upper horizontal guide 13d and the lower horizontal guide 13e.
Along with the vertical guide 13f while the slide drum 13b is in a horizontal state.
Is to be slid vertically along.

When the slide drum 13b comes close to the take-up drum 13a at the same height position across the flow-down area of each stick material 31 at the discharge-side end of the traverse conveyor 12, the take-up drum 13a The stacking belt 13c whose respective side portions are wound around the slide drum 13b hangs down in a U-shape in a flow-down region of the stick material 31 in the traverse conveyor 12 to form a bag-shaped accommodation portion. I have. Therefore, each stick material 31 flowing down from the traverse conveyor 12 is accumulated in the accommodating portion formed by the accumulation belt 13c hanging down in a U-shape.

The slide drum 13b is slid horizontally along an upper horizontal guide 13d and a lower horizontal guide 13e, and is vertically moved by vertical guides 13f vertically supported by the upper horizontal guide 13d and the lower horizontal guide 13e. Slide in the direction. Therefore,
When one side portion is wound by the winding drum 13a while the sliding drum 13b is horizontally separated from the winding drum 13a and slid downward,
The accumulation belt 13c is developed in an inclined plane as shown by a two-dot chain line in FIG. As a result, the stick members 31 accumulated in the accommodating portion of the accumulation belt 13c hanging down in a U-shape flow down along the inclined planar accumulation belt 13c.

The take-up drum 13a and the slide drum 13b are rotated by, for example, stepping motors having excellent responsiveness and excellent positioning accuracy.
Is configured to be slidable with high responsiveness and accurately in the horizontal and vertical directions by a stepping motor, a rack and a pinion mechanism.

A forming conveyor 14 forming a forming table is provided horizontally below a sliding area of the slide drum 13b in the horizontal direction. The transport direction of the forming conveyor 14 is orthogonal to the transport direction of the traverse conveyor 12,
The transport area extends over the entire area of the traverse conveyor 12 in the longitudinal direction. The width direction dimension of the forming conveyor 14 is set in accordance with the width direction dimension of the wood-based composite material to be manufactured.

On the forming conveyor 14, a stick material 31 flowing down along an accumulation belt 13c developed in an inclined plane is developed in a horizontal direction and stacked in a flat plate shape. In this case, the slide drum 13b located at the lower end of the inclined flat collecting belt 13c moves on the forming conveyor 14
While moving in the horizontal direction along the width direction of the
3c is sequentially fed out. Thereby, the stick material 31 flowing down along the accumulation belt 13c is
The sheet is transferred along the width direction on the forming conveyor 14 while keeping the state where the respective longitudinal directions are along the conveying direction of the forming conveyor 14 and the state where each end is shifted in the longitudinal direction.

At each side edge in the transport area of the forming conveyor 14, a fall prevention wall 14a is provided to prevent the stick members 31 accumulated on the forming conveyor 14 from falling.

The stick material laminating apparatus 1 having such a configuration
At 0, each stick material 31 sequentially manufactured by the stick material manufacturing apparatus 20 is continuously supplied to the carry-in end of each carry-in conveyor 11 in a state where the longitudinal direction thereof is orthogonal to the carrying direction. Then, each stick material 31 supplied on the carry-in end of each carry-in conveyor 11
Are transported horizontally by the transport belt 11a of the loading conveyor 11 with their respective longitudinal directions orthogonal to the transport direction, and from the end on the unloading side, the traverse conveyor 1
The second conveyor belt 12a is sequentially dropped on the carry-in end.

At this time, the transport belt 12a of the traverse conveyor 12 is circulated in the same direction as the circulating direction of the conveyor belt 11a in each carry-in conveyor 11, and reciprocated in the direction orthogonal to the circulating direction. ing. As a result, each carry-in conveyor 1 is placed on the carry-in end of the conveyor belt 12a in the traverse conveyor 12.
The stick members 31 sequentially dropped from 1 are kept on the conveyor belt 12a such that the longitudinal direction thereof is orthogonal to the conveying direction, and the ends of the adjacent stick members 31 are in the longitudinal direction. Are transferred out of order. And when the sliding direction of the traverse conveyor 12 is reversed, each stick material 31
The sheets are transferred onto the conveyor belt 12a in a state of being sequentially shifted in the opposite direction along the longitudinal direction.

The stick material 31 carried in and carried on the traverse conveyor 12 by each carry-in conveyor 11 is:
The traverse conveyor 12 is sequentially dropped downward from the discharge end. At this time, the slide drum 13b is positioned below the take-out end of the traverse conveyor 12 at the same height position as the take-up drum 13a, and therefore, the collecting belt 13c is taken up by the take-up belt 13c. Drum 13
A bag-shaped storage portion hanging down in a U-shape is formed between a and the slide drum 13b. And the stick material 31 flowing down from the unloading side end of the traverse conveyor 12
Are accumulated in the bag-shaped accommodation section by the accumulation belt 13c. In this case, since each stick material 31 flows down into the bag-shaped accommodation portion formed by the accumulation belt 13c opened along the direction perpendicular to the direction of conveyance of the traverse conveyor 12, the longitudinal direction of each stick material 31 is traversed. Even if the state is shifted from the state perpendicular to the transport direction of the conveyor 12, each longitudinal direction is corrected to a state orthogonal to the transport direction of the traverse conveyor 12 by being accommodated in the accommodation section.

As described above, when the stick members 31 are accumulated in a predetermined amount in the storage section constituted by the accumulation belt 13c, the winding drum 13a and the slide drum 13b are rotated in the same direction in synchronization with each other. Later, they are rotated synchronously in opposite directions. By repeating such forward rotation and reverse rotation, the accumulation belt 1
3c will be reciprocated along the circling direction,
Each of the stick members 31 accommodated in the accommodating portion holds its longitudinal direction in a direction orthogonal to the transport direction of the traverse conveyor 12, and furthermore, determines each position in the orthogonal direction to the transport direction of the traverse conveyor 12. In a state where each of the stick members 31 is held, the stick members 31 are agitated so as to be evenly dispersed along the width direction of each stick member 31. As a result, the state where each of the stick members 31 accommodated in the accommodating portion of the accumulation belt 13c is sequentially shifted in the longitudinal direction is eliminated, and each of the stick members 31 is
The stick members 31 are substantially evenly distributed in a direction orthogonal to the longitudinal direction.

In this state, the take-up drum 13a is slid while the slide drum 13b is slid downward.
And is positioned on a fall prevention wall 14a provided on a side edge of the forming conveyor 14 close to the winding drum 13a. And
By winding each side of the accumulation belt 13c by the winding drum 13a, the accumulation belt 13c is developed in an inclined plane shape. Thereby, the accumulation belt 1
The stick material 31 on 3c flows down while rotating along the accumulation belt 13c, and is supplied onto the forming conveyor 14. At this time, at the same time, the slide drum 13b
Is horizontally slid on the forming conveyor 14 so as to be separated from the winding drum 13a while feeding out the accumulation belt 13c. Thereby, each stick material 31 flows down the predetermined height position on the forming conveyor 14 along the accumulation belt 13c whose lower end is moved along the width direction, and over the entire length of the forming conveyor 14 in the longitudinal direction. They are sequentially transferred along the width direction.

When the lower end of the accumulating belt 13 is moved along the width direction of the forming conveyor 14, the stick members 31 move the respective longitudinal directions in the conveying direction of the forming conveyor 14 over the entire conveying area of the forming conveyor 14. , And while maintaining a state of being uniformly dispersed in a direction orthogonal to the longitudinal direction, the layers are stacked at an appropriate thickness over the entire conveyance area of the forming conveyor 14.

When the stick members 31 are stacked in a flat plate having a predetermined thickness over the entire transport area of the forming conveyor 14, the forming conveyor 14 is driven, and all the stick members 31 on the forming conveyor 14 are removed. The stick material 31 which has been conveyed to the molding machine and stacked in the molding machine is heated and pressed. Thereby, a woody composite material having a predetermined size in the shape of a flat plate is obtained. In the obtained wood-based composite material, since the stick materials 31 are uniformly dispersed in a direction orthogonal to the longitudinal direction, the strength along the direction is uniform.

The material of the accumulating belt 13c is, for example, a rubber-based or cloth-based suitable material so as to form a bag-shaped accommodating portion to accommodate the respective stick members 31 and then smoothly flow down onto the forming conveyor 14. Those having a high frictional force are used. As described above, since the accumulating belt 13c has an appropriate frictional force, each stick material 31 smoothly flows down while rotating on the accumulating belt 13c developed in an inclined plane shape. In addition, a net formed with metal and having excellent flexibility may be used as the accumulation belt 13c.

[0037]

According to the stick material laminating method and the stick material laminating apparatus of the present invention, the stick materials having the same longitudinal direction are accumulated while being shifted in the longitudinal direction. After evenly dispersing in the direction perpendicular to the longitudinal direction, it is developed in a flat shape on the forming table, so that each stick material has uniform strength along the direction perpendicular to the longitudinal direction. It is possible to efficiently produce a wood-based composite material.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an example of an embodiment of a stick material laminating apparatus according to the present invention, together with a stick material manufacturing apparatus.

FIG. 2 is a schematic plan view of a main part of the stick material laminating apparatus.

FIG. 3 is a schematic side view of a main part of the stick material laminating apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 stick material laminating device 11 carry-in conveyor 12 traverse conveyor 13 stacking mechanism 13a winding drum 13b slide drum 13c stacking conveyor 14 forming conveyor 20 stick material manufacturing device 31 stick material

Claims (5)

[Claims] 1. A step of sequentially transporting a plurality of stick materials having substantially the same length in a horizontal direction with their respective longitudinal directions orthogonal to the transport direction. In a state where they are displaced in the longitudinal direction, holding each directionality, throwing them into the accommodating section, aligning and accumulating the directions of the respective stick materials, and accumulating each stick material in the accommodating section, A step of developing while maintaining each directionality and longitudinal shift, and laminating them in a flat plate shape having a predetermined area and thickness. 2. A plurality of stick materials having substantially the same length are sequentially transported in a horizontal direction with their longitudinal directions orthogonal to the transport direction. A plurality of carry-in conveyors that carry out while maintaining their respective directions, and each stick material that is carried out by all the carry-in conveyors is sequentially carried in with their respective directions maintained, and each carry-in conveyor The traverse conveyor is designed to be conveyed in the same direction as the conveyance direction, and the whole is reciprocated in the direction perpendicular to the conveyance direction.The traverse conveyor is located at the side of the unloading side end of the traverse conveyor. All the stick materials to be carried out are arranged so that they can be collected while maintaining their directionality and longitudinal displacement. A stacking mechanism capable of developing each stick material sideways while maintaining the directionality and the deviation in the longitudinal direction to form a flat plate-like stacked state, and a stick material laminating apparatus comprising: . 3. The stacking mechanism has a stacking belt disposed along a transport direction of a traverse conveyor.
This stacking belt is configured in a bag-shaped storage section that hangs down in a U-shaped cross-section so that each stick material carried out of the traverse conveyor is sequentially input and stacked,
3. The stick material stacking device according to claim 2, wherein all the stick materials accumulated in the bag-shaped storage portion are inclined in a plane so as to flow down. 4. The stick material laminating apparatus according to claim 3, wherein the stacking belt in the stacking mechanism is configured to be able to reciprocate along a circumferential direction in a state of forming a bag-shaped accommodation portion. 5. The stick material stacking apparatus according to claim 3, wherein the lower end portion of the stacking belt in the stacking mechanism is moved in a horizontal direction when the stacking belt is inclined.